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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge" /> | |
| <title>Document</title> | |
| <!-- | |
| Combining async await with fetch | |
| --> | |
| </head> | |
| <body> | |
| <script> | |
| (async function f() { | |
| let badurl = "http://"; | |
| let goodurl = "http://jsonplaceholder.typicode.com/users"; | |
| let url = Math.round(Math.random()) ? badurl : goodurl; | |
| let data = await (await fetch(url).catch(handleErr)).json(); | |
| if (data.code && data.code == 400) { | |
| //problem | |
| return; | |
| } | |
| console.log(data); | |
| })(); | |
| function handleErr(err) { | |
| console.warn(err); | |
| let resp = new Response( | |
| JSON.stringify({ | |
| code: 400, | |
| message: "Stupid network Error" | |
| }) | |
| ); | |
| return resp; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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